EMBEDDED FILTERS FOR POWER RAIL MERGER

摘要

An integrated circuit (IC) can include multiple power domains that are served by a common power source. In an example, a first IC power rail can be coupled to the source and a first consumer circuit. A second IC power rail can be coupled to a second consumer circuit. The second IC power rail can receive a filtered power signal from an isolation module that is coupled between the first and second power rails. In an example, an isolation module includes an integrated inductor and a capacitor (e.g., a land-side capacitor). The integrated inductor can optionally include multiple spaced apart conductive layers that are electrically coupled. The integrated inductor can optionally include a series of conductive traces and plated through holes or vias that together provide a current path with multiple turns.

主权项

1. An integrated circuit package comprising:
a first power rail coupled to a power supply node, the first power rail configured to transmit a first power signal from the power supply node to a first consumer circuit; a second power rail configured to transmit a second power signal, based on the first power signal, to a second consumer circuit; and a first isolation module configured to receive the first power signal from the first power rail and, in response, provide the second power signal at the second power rail, the first isolation module comprising a first integrated inductor and a first integrated capacitor; wherein the first integrated inductor includes first and second inductor terminals coupled respectively to the first and second power rails; and wherein the first integrated capacitor includes a first capacitor terminal coupled to the first power rail, and a second capacitor terminal coupled to a reference node.